A lier in wait; a plotter.

One who practises collusion.

An evil or malicious person; a nocturnal thief or criminal. Obsolete.

One guilty of covin or fraud; a covinous person.

in Scots Law: a confidential person, e.g. an intimate friend, a partner in trade, a confidential man of business; one who acts in collusion with a…

Scots Law. an associate in an offence or charge; esp. one so nearly related to another as to be liable to the presumption of collusion, or connivance…

One who colludes.

One who intrigues; one who carries on a tortuous or underhand plot; a secret schemer or manœuvrer, esp. in politics.

Obsolete. A confederate in an illicit or underhand plan; a conspirator, a plotter.

A professional or habitual intriguer.